Abdomen, Basal half of elytra, Color of metallic reflections - Careful do not use with discolored specimens or those with soap film | Abdomen, Elytra, Pattern of pale spots | Abdomen, Fifth ventrite, Presence of a short ridge parallel to and set back only a fraction of the total segment length from the apical rim | Abdomen, First ventrite, Presence of a large pale spot at its base | Head, Long hairs located in the region from the vertex to the antennae, Color | Size in millimeters | State or province where beetle was collected | Thorax, Pronotum, Presence of a pale spot on the very far lateral sides

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Number scored for a state is in green.

1. State or province where beetle was collected

4AL    1CT    3DC    3DE    6FL    4GA    4IL    4IN    4KY    1MA    4MD    1ME    3MI    4MS    4NC    1NH    4NJ    3NY    4OH    3Ontario    3PA    1Quebec    1RI    4SC    4TN    4VA    1VT    3WI    4WV   

2. Size in millimeters

14    25    36    47    68    49    310    211    112   

3. Abdomen, Elytra, Pattern of pale spots

2All pale spots encompassing 8 or fewer pits    3At least one patch encompasing greater than 8 pits, usually many more   

4. Thorax, Pronotum, Presence of a pale spot on the very far lateral sides

3Absent    3Present   

5. Abdomen, First ventrite, Presence of a large pale spot at its base

4Absent    2Present   

6. Abdomen, Fifth ventrite, Presence of a short ridge parallel to and set back only a fraction of the total segment length from the apical rim    [Explain]

3Absent    3Present   

7. Head, Long hairs located in the region from the vertex to the antennae, Color

3Black    4White   

8. Abdomen, Basal half of elytra, Color of metallic reflections - Careful do not use with discolored specimens or those with soap film

3Blue    4Bronze    3White